What was the name of the non-aggression pact signed by the soviet union and nazi germany?
a. molotov-ribbentrop pact
b. treaty of moscow
c. berlin-moscow pact
d. treaty of brest-litovsk

which of the following men was the leader of the soviet union during the cuban missile crisis?
a. fidel castro
b. josef stalin
c. nikita khrushchev
d. vladimir lenin